Question

Assertion: The atomic bomb uses the principle of Nuclear fission.
Reason: Nuclear fusion reaction requires high temperatures.
A. Both Assertion and Reason are true and Reason is the correct explanation of Assertion
B. Both Assertion and Reason are true but Reason is not the correct explanation of Assertion
C. Assertion is true but Reason is false
D. Assertion is false but Reason is true
E. Both Assertion and Reason are false

Answer 1

Hint: Initially let us know what Nuclear fission and fusion reactions are: These are the types of nuclear reactions that produce energy but the both types of reactions have different applications.

Complete step by step solution:
Nuclear Fission is referred to the splitting of a heavy and an unstable nucleus into two lighter nuclei, whereas the fusion is the process where two light nuclei combine together releasing huge amounts of energy, Fusion reactions still has a vast area of research, but it is difficult to study as it does not sustain for long periods of time because of the reaction conditions as has huge amount of pressure and temperature which is needed to join the nuclei together.
As we are familiar about the definitions let’s analyse what the correct statement is Nuclear weapons or atomic bombs which have explosive outputs is exclusively an example of nuclear fission reactions .In Nuclear fission weapons, a mass of fissile material (mostly enriched uranium or plutonium) is assembled into a supercritical mass the amount of material that is needed to start an exponentially growing nuclear chain reaction, which causes an explosion.
Yes, it's true that Nuclear fission requires higher temperature but this is the reason that atomic bombs causing an explosion are not right.
So, option B is the correct answer.

Note: Nuclear fusion produces a large number of energy which are quite larger than Nuclear fission, and Nuclear fission has a tendency to produce greater amounts of radio-active products but this is not the case with Nuclear fusion.